<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
</head>
<body>

	<button id="addBtn">add</button>
	

	<script>
		/*var arr = [1, 2, 3, 'a', 'b', 'c'];
		var str = 'abcdefg';

		var [n1, n2, n3] = arr;

		for (var val of str) {
			console.log(val);
		}*/

		/*function add(a, b) {
			return a + b;
		}

		var s = add(7, 8);
		console.log(s);*/

		/*var sum = (x, y) => {
			console.log(this);
			return x + y;
		}

		console.log(sum(9, 6));*/

		/*var addBtn = document.getElementById('addBtn');
		addBtn.onclick = event => console.log(event)*/

		// var test = new Set(1, 2, 3, 'a', 'b', 'c', '3');

		for (let i=0; i<10; i++) {
			// 
		}

		console.log(i);

		let str = 'abc';
		
	</script>
</body>
</html>